Geochemical and geochronological arguments for heterogeneous nature and complex development of Variscan lower continental crust: Náměšť Granulite Massif (Bohemian Massif, Czech Republic)
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00025798%3A_____%2F12%3A00000075" target="_blank" >RIV/00025798:_____/12:00000075 - isvavai.cz</a>
Result on the web
<a href="http://geolfrance.brgm.fr" target="_blank" >http://geolfrance.brgm.fr</a>
DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Geochemical and geochronological arguments for heterogeneous nature and complex development of Variscan lower continental crust: Náměšť Granulite Massif (Bohemian Massif, Czech Republic)
Original language description
The felsic granulites of the Náměšť Granulite Massif represent a subducted Early Devonian continental crust, while the associated tholeiitic metabasites were probably generated during Cambro?Ordovician rifting. Based on these characteristics and contrasting P?T data we adopt a model of lower crustal relamination of low-density continental crust below autochthonous dense mafic root of the Moldanubian Continent. The difference in Zrn ages attributed to the HP metamorphic climax between the Náměšť granulite (~353 Ma) and other granulite massifs (~340 Ma; e.g., Wendt et al., 1994; Kröner et al., 2000; Friedl et al., 2011) is interpreted in terms of diachronous emplacement and different time scale of thermal maturation of western and eastern portions of therelaminated crust. Our work also shows that the mantle was refertilized before its incorporation into the crust, a feature typical of asthenospheric mantle below slow spreading rifts. Therefore, it is very likely that the Late Devonian h
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
DD - Geochemistry
OECD FORD branch
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Result continuities
Project
<a href="/en/project/GAP210%2F11%2F2358" target="_blank" >GAP210/11/2358: Granulitization of the Moldanubian lower crust: geochemical constraints on protoliths and metamorphic changes in course of the Variscan orogenic cycle</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Géologie de la France
ISBN
978-2-7159-2535-9
ISSN
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e-ISSN
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Number of pages
2
Pages from-to
132-133
Publisher name
BRGM, SGF
Place of publication
Orléans
Event location
Sassari
Event date
Jan 1, 2012
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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